diff options
Diffstat (limited to 'drivers/usb/host/ehci-mxc.c')
| -rw-r--r-- | drivers/usb/host/ehci-mxc.c | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c deleted file mode 100644 index dc2676320527..000000000000 --- a/drivers/usb/host/ehci-mxc.c +++ /dev/null @@ -1,213 +0,0 @@ -// 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"); |