usb: host: remove tilegx platform glue

The tile architecture is getting removed, so the ehci and ohci platform
glue drivers are no longer needed. In case of ohci, this is the last
one to define a PLATFORM_DRIVER macro, so we can remove even more.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 207 deletions

diff --git a/drivers/usb/host/ehci-tilegx.c b/drivers/usb/host/ehci-tilegx.c
deleted file mode 100644
index 610ed437ed2c..000000000000
--- a/drivers/usb/host/ehci-tilegx.c
+++ /dev/null
@@ -1,207 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright 2012 Tilera Corporation. All Rights Reserved.
- */
-
-/*
- * Tilera TILE-Gx USB EHCI host controller driver.
- */
-
-#include <linux/irq.h>
-#include <linux/platform_device.h>
-#include <linux/usb/tilegx.h>
-#include <linux/usb.h>
-
-#include <asm/homecache.h>
-
-#include <gxio/iorpc_usb_host.h>
-#include <gxio/usb_host.h>
-
-static void tilegx_start_ehc(void)
-{
-}
-
-static void tilegx_stop_ehc(void)
-{
-}
-
-static int tilegx_ehci_setup(struct usb_hcd *hcd)
-{
-	int ret = ehci_init(hcd);
-
-	/*
-	 * Some drivers do:
-	 *
-	 *   struct ehci_hcd *ehci = hcd_to_ehci(hcd);
-	 *   ehci->need_io_watchdog = 0;
-	 *
-	 * here, but since this is a new driver we're going to leave the
-	 * watchdog enabled.  Later we may try to turn it off and see
-	 * whether we run into any problems.
-	 */
-
-	return ret;
-}
-
-static const struct hc_driver ehci_tilegx_hc_driver = {
-	.description		= hcd_name,
-	.product_desc		= "Tile-Gx EHCI",
-	.hcd_priv_size		= sizeof(struct ehci_hcd),
-
-	/*
-	 * Generic hardware linkage.
-	 */
-	.irq			= ehci_irq,
-	.flags			= HCD_MEMORY | HCD_USB2 | HCD_BH,
-
-	/*
-	 * Basic lifecycle operations.
-	 */
-	.reset			= tilegx_ehci_setup,
-	.start			= ehci_run,
-	.stop			= ehci_stop,
-	.shutdown		= ehci_shutdown,
-
-	/*
-	 * Managing I/O requests and associated device resources.
-	 */
-	.urb_enqueue		= ehci_urb_enqueue,
-	.urb_dequeue		= ehci_urb_dequeue,
-	.endpoint_disable	= ehci_endpoint_disable,
-	.endpoint_reset		= ehci_endpoint_reset,
-
-	/*
-	 * Scheduling support.
-	 */
-	.get_frame_number	= ehci_get_frame,
-
-	/*
-	 * Root hub support.
-	 */
-	.hub_status_data	= ehci_hub_status_data,
-	.hub_control		= ehci_hub_control,
-	.bus_suspend		= ehci_bus_suspend,
-	.bus_resume		= ehci_bus_resume,
-	.relinquish_port	= ehci_relinquish_port,
-	.port_handed_over	= ehci_port_handed_over,
-
-	.clear_tt_buffer_complete	= ehci_clear_tt_buffer_complete,
-};
-
-static int ehci_hcd_tilegx_drv_probe(struct platform_device *pdev)
-{
-	struct usb_hcd *hcd;
-	struct ehci_hcd *ehci;
-	struct tilegx_usb_platform_data *pdata = dev_get_platdata(&pdev->dev);
-	pte_t pte = { 0 };
-	int my_cpu = smp_processor_id();
-	int ret;
-
-	if (usb_disabled())
-		return -ENODEV;
-
-	/*
-	 * Try to initialize our GXIO context; if we can't, the device
-	 * doesn't exist.
-	 */
-	if (gxio_usb_host_init(&pdata->usb_ctx, pdata->dev_index, 1) != 0)
-		return -ENXIO;
-
-	hcd = usb_create_hcd(&ehci_tilegx_hc_driver, &pdev->dev,
-			     dev_name(&pdev->dev));
-	if (!hcd) {
-          ret = -ENOMEM;
-          goto err_hcd;
-        }
-
-	/*
-	 * We don't use rsrc_start to map in our registers, but seems like
-	 * we ought to set it to something, so we use the register VA.
-	 */
-	hcd->rsrc_start =
-		(ulong) gxio_usb_host_get_reg_start(&pdata->usb_ctx);
-	hcd->rsrc_len = gxio_usb_host_get_reg_len(&pdata->usb_ctx);
-	hcd->regs = gxio_usb_host_get_reg_start(&pdata->usb_ctx);
-
-	tilegx_start_ehc();
-
-	ehci = hcd_to_ehci(hcd);
-	ehci->caps = hcd->regs;
-	ehci->regs =
-		hcd->regs + HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase));
-	/* cache this readonly data; minimize chip reads */
-	ehci->hcs_params = readl(&ehci->caps->hcs_params);
-
-	/* Create our IRQs and register them. */
-	pdata->irq = irq_alloc_hwirq(-1);
-	if (!pdata->irq) {
-		ret = -ENXIO;
-		goto err_no_irq;
-	}
-
-	tile_irq_activate(pdata->irq, TILE_IRQ_PERCPU);
-
-	/* Configure interrupts. */
-	ret = gxio_usb_host_cfg_interrupt(&pdata->usb_ctx,
-					  cpu_x(my_cpu), cpu_y(my_cpu),
-					  KERNEL_PL, pdata->irq);
-	if (ret) {
-		ret = -ENXIO;
-		goto err_have_irq;
-	}
-
-	/* Register all of our memory. */
-	pte = pte_set_home(pte, PAGE_HOME_HASH);
-	ret = gxio_usb_host_register_client_memory(&pdata->usb_ctx, pte, 0);
-	if (ret) {
-		ret = -ENXIO;
-		goto err_have_irq;
-	}
-
-	ret = usb_add_hcd(hcd, pdata->irq, IRQF_SHARED);
-	if (ret == 0) {
-		platform_set_drvdata(pdev, hcd);
-		device_wakeup_enable(hcd->self.controller);
-		return ret;
-	}
-
-err_have_irq:
-	irq_free_hwirq(pdata->irq);
-err_no_irq:
-	tilegx_stop_ehc();
-	usb_put_hcd(hcd);
-err_hcd:
-	gxio_usb_host_destroy(&pdata->usb_ctx);
-	return ret;
-}
-
-static int ehci_hcd_tilegx_drv_remove(struct platform_device *pdev)
-{
-	struct usb_hcd *hcd = platform_get_drvdata(pdev);
-	struct tilegx_usb_platform_data *pdata = dev_get_platdata(&pdev->dev);
-
-	usb_remove_hcd(hcd);
-	usb_put_hcd(hcd);
-	tilegx_stop_ehc();
-	gxio_usb_host_destroy(&pdata->usb_ctx);
-	irq_free_hwirq(pdata->irq);
-
-	return 0;
-}
-
-static void ehci_hcd_tilegx_drv_shutdown(struct platform_device *pdev)
-{
-	usb_hcd_platform_shutdown(pdev);
-	ehci_hcd_tilegx_drv_remove(pdev);
-}
-
-static struct platform_driver ehci_hcd_tilegx_driver = {
-	.probe		= ehci_hcd_tilegx_drv_probe,
-	.remove		= ehci_hcd_tilegx_drv_remove,
-	.shutdown	= ehci_hcd_tilegx_drv_shutdown,
-	.driver = {
-		.name	= "tilegx-ehci",
-	}
-};
-
-MODULE_ALIAS("platform:tilegx-ehci");