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@@ -1,207 +0,0 @@
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-// SPDX-License-Identifier: GPL-2.0
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-/*
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- * Copyright 2012 Tilera Corporation. All Rights Reserved.
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- */
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-
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-/*
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- * Tilera TILE-Gx USB EHCI host controller driver.
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- */
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-
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-#include <linux/irq.h>
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-#include <linux/platform_device.h>
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-#include <linux/usb/tilegx.h>
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-#include <linux/usb.h>
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-
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-#include <asm/homecache.h>
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-
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-#include <gxio/iorpc_usb_host.h>
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-#include <gxio/usb_host.h>
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-
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-static void tilegx_start_ehc(void)
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-{
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-}
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-
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-static void tilegx_stop_ehc(void)
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-{
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-}
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-
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-static int tilegx_ehci_setup(struct usb_hcd *hcd)
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-{
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- int ret = ehci_init(hcd);
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-
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- /*
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- * Some drivers do:
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- *
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- * struct ehci_hcd *ehci = hcd_to_ehci(hcd);
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- * ehci->need_io_watchdog = 0;
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- *
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- * here, but since this is a new driver we're going to leave the
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- * watchdog enabled. Later we may try to turn it off and see
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- * whether we run into any problems.
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- */
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-
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- return ret;
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-}
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-
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-static const struct hc_driver ehci_tilegx_hc_driver = {
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- .description = hcd_name,
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- .product_desc = "Tile-Gx EHCI",
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- .hcd_priv_size = sizeof(struct ehci_hcd),
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-
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- /*
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- * Generic hardware linkage.
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- */
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- .irq = ehci_irq,
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- .flags = HCD_MEMORY | HCD_USB2 | HCD_BH,
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-
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- /*
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- * Basic lifecycle operations.
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- */
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- .reset = tilegx_ehci_setup,
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- .start = ehci_run,
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- .stop = ehci_stop,
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- .shutdown = ehci_shutdown,
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-
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- /*
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- * Managing I/O requests and associated device resources.
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- */
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- .urb_enqueue = ehci_urb_enqueue,
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- .urb_dequeue = ehci_urb_dequeue,
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- .endpoint_disable = ehci_endpoint_disable,
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- .endpoint_reset = ehci_endpoint_reset,
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-
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- /*
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- * Scheduling support.
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- */
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- .get_frame_number = ehci_get_frame,
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-
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- /*
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- * Root hub support.
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- */
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- .hub_status_data = ehci_hub_status_data,
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- .hub_control = ehci_hub_control,
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- .bus_suspend = ehci_bus_suspend,
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- .bus_resume = ehci_bus_resume,
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- .relinquish_port = ehci_relinquish_port,
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- .port_handed_over = ehci_port_handed_over,
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-
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- .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
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-};
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-
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-static int ehci_hcd_tilegx_drv_probe(struct platform_device *pdev)
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-{
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- struct usb_hcd *hcd;
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- struct ehci_hcd *ehci;
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- struct tilegx_usb_platform_data *pdata = dev_get_platdata(&pdev->dev);
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- pte_t pte = { 0 };
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- int my_cpu = smp_processor_id();
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- int ret;
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-
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- if (usb_disabled())
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- return -ENODEV;
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-
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- /*
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- * Try to initialize our GXIO context; if we can't, the device
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- * doesn't exist.
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- */
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- if (gxio_usb_host_init(&pdata->usb_ctx, pdata->dev_index, 1) != 0)
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- return -ENXIO;
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-
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- hcd = usb_create_hcd(&ehci_tilegx_hc_driver, &pdev->dev,
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- dev_name(&pdev->dev));
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- if (!hcd) {
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- ret = -ENOMEM;
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- goto err_hcd;
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- }
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-
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- /*
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- * We don't use rsrc_start to map in our registers, but seems like
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- * we ought to set it to something, so we use the register VA.
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- */
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- hcd->rsrc_start =
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- (ulong) gxio_usb_host_get_reg_start(&pdata->usb_ctx);
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- hcd->rsrc_len = gxio_usb_host_get_reg_len(&pdata->usb_ctx);
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- hcd->regs = gxio_usb_host_get_reg_start(&pdata->usb_ctx);
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-
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- tilegx_start_ehc();
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-
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- ehci = hcd_to_ehci(hcd);
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- ehci->caps = hcd->regs;
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- ehci->regs =
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- hcd->regs + HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase));
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- /* cache this readonly data; minimize chip reads */
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- ehci->hcs_params = readl(&ehci->caps->hcs_params);
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-
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- /* Create our IRQs and register them. */
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- pdata->irq = irq_alloc_hwirq(-1);
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- if (!pdata->irq) {
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- ret = -ENXIO;
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- goto err_no_irq;
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- }
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-
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- tile_irq_activate(pdata->irq, TILE_IRQ_PERCPU);
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-
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- /* Configure interrupts. */
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- ret = gxio_usb_host_cfg_interrupt(&pdata->usb_ctx,
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- cpu_x(my_cpu), cpu_y(my_cpu),
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- KERNEL_PL, pdata->irq);
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- if (ret) {
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- ret = -ENXIO;
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- goto err_have_irq;
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- }
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-
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- /* Register all of our memory. */
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- pte = pte_set_home(pte, PAGE_HOME_HASH);
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- ret = gxio_usb_host_register_client_memory(&pdata->usb_ctx, pte, 0);
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- if (ret) {
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- ret = -ENXIO;
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- goto err_have_irq;
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- }
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-
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- ret = usb_add_hcd(hcd, pdata->irq, IRQF_SHARED);
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- if (ret == 0) {
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- platform_set_drvdata(pdev, hcd);
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- device_wakeup_enable(hcd->self.controller);
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- return ret;
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- }
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-
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-err_have_irq:
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- irq_free_hwirq(pdata->irq);
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-err_no_irq:
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- tilegx_stop_ehc();
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- usb_put_hcd(hcd);
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-err_hcd:
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- gxio_usb_host_destroy(&pdata->usb_ctx);
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- return ret;
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-}
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-
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-static int ehci_hcd_tilegx_drv_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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- struct tilegx_usb_platform_data *pdata = dev_get_platdata(&pdev->dev);
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-
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- usb_remove_hcd(hcd);
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- usb_put_hcd(hcd);
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- tilegx_stop_ehc();
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- gxio_usb_host_destroy(&pdata->usb_ctx);
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- irq_free_hwirq(pdata->irq);
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-
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- return 0;
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-}
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-
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-static void ehci_hcd_tilegx_drv_shutdown(struct platform_device *pdev)
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-{
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- usb_hcd_platform_shutdown(pdev);
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- ehci_hcd_tilegx_drv_remove(pdev);
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-}
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-
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-static struct platform_driver ehci_hcd_tilegx_driver = {
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- .probe = ehci_hcd_tilegx_drv_probe,
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- .remove = ehci_hcd_tilegx_drv_remove,
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- .shutdown = ehci_hcd_tilegx_drv_shutdown,
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- .driver = {
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- .name = "tilegx-ehci",
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- }
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-};
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-
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-MODULE_ALIAS("platform:tilegx-ehci");
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Arnd Bergmann