forked from Minki/linux
usb: host: remove ehci-msm.c
No Qualcomm SoC requires the "ehci-msm.c" code any more. So remove it. Suggested-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Alex Elder <elder@linaro.org> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Acked-by: Andy Gross <andy.gross@linaro.org> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alex Elder
Greg Kroah-Hartman
parent
612a1b948c
commit
8b3f863033
@ -222,18 +222,6 @@ config USB_EHCI_HCD_AT91
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Enables support for the on-chip EHCI controller on
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Atmel chips.
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config USB_EHCI_MSM
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tristate "Support for Qualcomm QSD/MSM on-chip EHCI USB controller"
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depends on ARCH_QCOM
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select USB_EHCI_ROOT_HUB_TT
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---help---
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Enables support for the USB Host controller present on the
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Qualcomm chipsets. Root Hub has inbuilt TT.
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This driver depends on OTG driver for PHY initialization,
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clock management, powering up VBUS, and power management.
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This driver is not supported on boards like trout which
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has an external PHY.
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config USB_EHCI_TEGRA
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tristate "NVIDIA Tegra HCD support"
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depends on ARCH_TEGRA
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@ -43,7 +43,6 @@ obj-$(CONFIG_USB_EHCI_HCD_SPEAR) += ehci-spear.o
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obj-$(CONFIG_USB_EHCI_HCD_STI) += ehci-st.o
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obj-$(CONFIG_USB_EHCI_EXYNOS) += ehci-exynos.o
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obj-$(CONFIG_USB_EHCI_HCD_AT91) += ehci-atmel.o
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obj-$(CONFIG_USB_EHCI_MSM) += ehci-msm.o
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obj-$(CONFIG_USB_EHCI_TEGRA) += ehci-tegra.o
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obj-$(CONFIG_USB_W90X900_EHCI) += ehci-w90x900.o
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@ -1,265 +0,0 @@
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/* ehci-msm.c - HSUSB Host Controller Driver Implementation
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*
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* Copyright (c) 2008-2011, Code Aurora Forum. All rights reserved.
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*
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* Partly derived from ehci-fsl.c and ehci-hcd.c
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* Copyright (c) 2000-2004 by David Brownell
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* Copyright (c) 2005 MontaVista Software
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*
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* All source code in this file is licensed under the following license except
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* where indicated.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* See the GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you can find it at http://www.fsf.org
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*/
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/pm_runtime.h>
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#include <linux/usb/otg.h>
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#include <linux/usb/msm_hsusb_hw.h>
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#include <linux/usb.h>
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#include <linux/usb/hcd.h>
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#include <linux/acpi.h>
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#include "ehci.h"
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#define MSM_USB_BASE (hcd->regs)
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#define DRIVER_DESC "Qualcomm On-Chip EHCI Host Controller"
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static const char hcd_name[] = "ehci-msm";
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static struct hc_driver __read_mostly msm_hc_driver;
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static int ehci_msm_reset(struct usb_hcd *hcd)
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{
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struct ehci_hcd *ehci = hcd_to_ehci(hcd);
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int retval;
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ehci->caps = USB_CAPLENGTH;
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hcd->has_tt = 1;
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retval = ehci_setup(hcd);
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if (retval)
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return retval;
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/* select ULPI phy and clear other status/control bits in PORTSC */
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writel(PORTSC_PTS_ULPI, USB_PORTSC);
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/* bursts of unspecified length. */
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writel(0, USB_AHBBURST);
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/* Use the AHB transactor, allow posted data writes */
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writel(0x8, USB_AHBMODE);
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/* Disable streaming mode and select host mode */
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writel(0x13, USB_USBMODE);
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/* Disable ULPI_TX_PKT_EN_CLR_FIX which is valid only for HSIC */
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writel(readl(USB_GENCONFIG_2) & ~ULPI_TX_PKT_EN_CLR_FIX, USB_GENCONFIG_2);
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return 0;
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}
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static int ehci_msm_probe(struct platform_device *pdev)
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{
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struct usb_hcd *hcd;
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struct resource *res;
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struct usb_phy *phy;
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int ret;
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dev_dbg(&pdev->dev, "ehci_msm proble\n");
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hcd = usb_create_hcd(&msm_hc_driver, &pdev->dev, dev_name(&pdev->dev));
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if (!hcd) {
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dev_err(&pdev->dev, "Unable to create HCD\n");
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return -ENOMEM;
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}
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ret = platform_get_irq(pdev, 0);
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if (ret < 0) {
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dev_err(&pdev->dev, "Unable to get IRQ resource\n");
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goto put_hcd;
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}
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hcd->irq = ret;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!res) {
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dev_err(&pdev->dev, "Unable to get memory resource\n");
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ret = -ENODEV;
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goto put_hcd;
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}
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hcd->rsrc_start = res->start;
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hcd->rsrc_len = resource_size(res);
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hcd->regs = devm_ioremap(&pdev->dev, hcd->rsrc_start, hcd->rsrc_len);
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if (!hcd->regs) {
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dev_err(&pdev->dev, "ioremap failed\n");
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ret = -ENOMEM;
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goto put_hcd;
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}
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/*
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* If there is an OTG driver, let it take care of PHY initialization,
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* clock management, powering up VBUS, mapping of registers address
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* space and power management.
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*/
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if (pdev->dev.of_node)
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phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0);
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else
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phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
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if (IS_ERR(phy)) {
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if (PTR_ERR(phy) == -EPROBE_DEFER) {
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dev_err(&pdev->dev, "unable to find transceiver\n");
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ret = -EPROBE_DEFER;
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goto put_hcd;
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}
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phy = NULL;
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}
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hcd->usb_phy = phy;
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device_init_wakeup(&pdev->dev, 1);
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if (phy && phy->otg) {
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/*
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* MSM OTG driver takes care of adding the HCD and
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* placing hardware into low power mode via runtime PM.
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*/
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ret = otg_set_host(phy->otg, &hcd->self);
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if (ret < 0) {
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dev_err(&pdev->dev, "unable to register with transceiver\n");
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goto put_hcd;
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}
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pm_runtime_no_callbacks(&pdev->dev);
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pm_runtime_enable(&pdev->dev);
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} else {
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ret = usb_add_hcd(hcd, hcd->irq, IRQF_SHARED);
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if (ret)
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goto put_hcd;
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}
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return 0;
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put_hcd:
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usb_put_hcd(hcd);
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return ret;
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}
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static int ehci_msm_remove(struct platform_device *pdev)
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{
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struct usb_hcd *hcd = platform_get_drvdata(pdev);
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device_init_wakeup(&pdev->dev, 0);
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pm_runtime_disable(&pdev->dev);
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pm_runtime_set_suspended(&pdev->dev);
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if (hcd->usb_phy && hcd->usb_phy->otg)
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otg_set_host(hcd->usb_phy->otg, NULL);
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else
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usb_remove_hcd(hcd);
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usb_put_hcd(hcd);
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return 0;
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}
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#ifdef CONFIG_PM
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static int ehci_msm_pm_suspend(struct device *dev)
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{
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struct usb_hcd *hcd = dev_get_drvdata(dev);
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struct ehci_hcd *ehci = hcd_to_ehci(hcd);
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bool do_wakeup = device_may_wakeup(dev);
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dev_dbg(dev, "ehci-msm PM suspend\n");
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/* Only call ehci_suspend if ehci_setup has been done */
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if (ehci->sbrn)
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return ehci_suspend(hcd, do_wakeup);
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return 0;
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}
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static int ehci_msm_pm_resume(struct device *dev)
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{
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struct usb_hcd *hcd = dev_get_drvdata(dev);
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struct ehci_hcd *ehci = hcd_to_ehci(hcd);
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dev_dbg(dev, "ehci-msm PM resume\n");
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/* Only call ehci_resume if ehci_setup has been done */
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if (ehci->sbrn)
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ehci_resume(hcd, false);
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return 0;
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}
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#else
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#define ehci_msm_pm_suspend NULL
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#define ehci_msm_pm_resume NULL
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#endif
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static const struct dev_pm_ops ehci_msm_dev_pm_ops = {
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.suspend = ehci_msm_pm_suspend,
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.resume = ehci_msm_pm_resume,
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};
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static const struct acpi_device_id msm_ehci_acpi_ids[] = {
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{ "QCOM8040", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(acpi, msm_ehci_acpi_ids);
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static const struct of_device_id msm_ehci_dt_match[] = {
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{ .compatible = "qcom,ehci-host", },
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{}
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};
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MODULE_DEVICE_TABLE(of, msm_ehci_dt_match);
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static struct platform_driver ehci_msm_driver = {
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.probe = ehci_msm_probe,
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.remove = ehci_msm_remove,
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.shutdown = usb_hcd_platform_shutdown,
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.driver = {
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.name = "msm_hsusb_host",
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.pm = &ehci_msm_dev_pm_ops,
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.of_match_table = msm_ehci_dt_match,
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.acpi_match_table = ACPI_PTR(msm_ehci_acpi_ids),
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},
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};
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static const struct ehci_driver_overrides msm_overrides __initconst = {
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.reset = ehci_msm_reset,
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};
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static int __init ehci_msm_init(void)
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{
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if (usb_disabled())
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return -ENODEV;
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pr_info("%s: " DRIVER_DESC "\n", hcd_name);
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ehci_init_driver(&msm_hc_driver, &msm_overrides);
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return platform_driver_register(&ehci_msm_driver);
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}
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module_init(ehci_msm_init);
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static void __exit ehci_msm_cleanup(void)
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{
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platform_driver_unregister(&ehci_msm_driver);
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}
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module_exit(ehci_msm_cleanup);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_ALIAS("platform:msm-ehci");
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MODULE_LICENSE("GPL");
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