diff options
Diffstat (limited to 'drivers/usb/host/ohci-tilegx.c')
| -rw-r--r-- | drivers/usb/host/ohci-tilegx.c | 196 |
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"); |