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, 196 deletions

diff --git a/drivers/usb/host/ohci-tilegx.c b/drivers/usb/host/ohci-tilegx.c
deleted file mode 100644
index d21ca3ce9a30..000000000000
--- a/drivers/usb/host/ohci-tilegx.c
+++ /dev/null
@@ -1,196 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright 2012 Tilera Corporation. All Rights Reserved.
- */
-
-/*
- * Tilera TILE-Gx USB OHCI 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_ohc(void)
-{
-}
-
-static void tilegx_stop_ohc(void)
-{
-}
-
-static int tilegx_ohci_start(struct usb_hcd *hcd)
-{
-	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
-	int ret;
-
-	ret = ohci_init(ohci);
-	if (ret < 0)
-		return ret;
-
-	ret = ohci_run(ohci);
-	if (ret < 0) {
-		dev_err(hcd->self.controller, "can't start %s\n",
-			hcd->self.bus_name);
-		ohci_stop(hcd);
-		return ret;
-	}
-
-	return 0;
-}
-
-static const struct hc_driver ohci_tilegx_hc_driver = {
-	.description		= hcd_name,
-	.product_desc		= "Tile-Gx OHCI",
-	.hcd_priv_size		= sizeof(struct ohci_hcd),
-
-	/*
-	 * Generic hardware linkage.
-	 */
-	.irq			= ohci_irq,
-	.flags			= HCD_MEMORY | HCD_LOCAL_MEM | HCD_USB11,
-
-	/*
-	 * Basic lifecycle operations.
-	 */
-	.start			= tilegx_ohci_start,
-	.stop			= ohci_stop,
-	.shutdown		= ohci_shutdown,
-
-	/*
-	 * Managing I/O requests and associated device resources.
-	 */
-	.urb_enqueue		= ohci_urb_enqueue,
-	.urb_dequeue		= ohci_urb_dequeue,
-	.endpoint_disable	= ohci_endpoint_disable,
-
-	/*
-	 * Scheduling support.
-	 */
-	.get_frame_number	= ohci_get_frame,
-
-	/*
-	 * Root hub support.
-	 */
-	.hub_status_data	= ohci_hub_status_data,
-	.hub_control		= ohci_hub_control,
-	.start_port_reset	= ohci_start_port_reset,
-};
-
-static int ohci_hcd_tilegx_drv_probe(struct platform_device *pdev)
-{
-	struct usb_hcd *hcd;
-	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, 0) != 0)
-		return -ENXIO;
-
-	hcd = usb_create_hcd(&ohci_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_ohc();
-
-	/* 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;
-	}
-
-	ohci_hcd_init(hcd_to_ohci(hcd));
-
-	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_ohc();
-	usb_put_hcd(hcd);
-err_hcd:
-	gxio_usb_host_destroy(&pdata->usb_ctx);
-	return ret;
-}
-
-static int ohci_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_ohc();
-	gxio_usb_host_destroy(&pdata->usb_ctx);
-	irq_free_hwirq(pdata->irq);
-
-	return 0;
-}
-
-static void ohci_hcd_tilegx_drv_shutdown(struct platform_device *pdev)
-{
-	usb_hcd_platform_shutdown(pdev);
-	ohci_hcd_tilegx_drv_remove(pdev);
-}
-
-static struct platform_driver ohci_hcd_tilegx_driver = {
-	.probe		= ohci_hcd_tilegx_drv_probe,
-	.remove		= ohci_hcd_tilegx_drv_remove,
-	.shutdown	= ohci_hcd_tilegx_drv_shutdown,
-	.driver = {
-		.name	= "tilegx-ohci",
-	}
-};
-
-MODULE_ALIAS("platform:tilegx-ohci");