diff options
| -rw-r--r-- | drivers/usb/host/ehci-hcd.c | 5 | ||||
| -rw-r--r-- | drivers/usb/host/ehci-platform.c | 34 | ||||
| -rw-r--r-- | drivers/usb/host/ehci-vt8500.c | 150 |
3 files changed, 28 insertions, 161 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 037a4729d549..b12b97d2ccaf 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -1269,11 +1269,6 @@ MODULE_LICENSE ("GPL"); #define PLATFORM_DRIVER ehci_octeon_driver #endif -#ifdef CONFIG_ARCH_VT8500 -#include "ehci-vt8500.c" -#define PLATFORM_DRIVER vt8500_ehci_driver -#endif - #ifdef CONFIG_PLAT_SPEAR #include "ehci-spear.c" #define PLATFORM_DRIVER spear_ehci_hcd_driver diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c index ca7506390542..cda0fa9613e7 100644 --- a/drivers/usb/host/ehci-platform.c +++ b/drivers/usb/host/ehci-platform.c @@ -18,11 +18,13 @@ * * Licensed under the GNU/GPL. See COPYING for details. */ +#include <linux/dma-mapping.h> #include <linux/err.h> #include <linux/kernel.h> #include <linux/hrtimer.h> #include <linux/io.h> #include <linux/module.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <linux/usb.h> #include <linux/usb/hcd.h> @@ -62,22 +64,32 @@ static const struct ehci_driver_overrides platform_overrides __initdata = { .reset = ehci_platform_reset, }; +static struct usb_ehci_pdata ehci_platform_defaults; + static int ehci_platform_probe(struct platform_device *dev) { struct usb_hcd *hcd; struct resource *res_mem; - struct usb_ehci_pdata *pdata = dev->dev.platform_data; + struct usb_ehci_pdata *pdata; int irq; int err = -ENOMEM; - if (!pdata) { - WARN_ON(1); - return -ENODEV; - } - if (usb_disabled()) return -ENODEV; + /* + * use reasonable defaults so platforms don't have to provide these. + * with DT probing on ARM, none of these are set. + */ + if (!dev->dev.platform_data) + dev->dev.platform_data = &ehci_platform_defaults; + if (!dev->dev.dma_mask) + dev->dev.dma_mask = &dev->dev.coherent_dma_mask; + if (!dev->dev.coherent_dma_mask) + dev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + + pdata = dev->dev.platform_data; + irq = platform_get_irq(dev, 0); if (irq < 0) { dev_err(&dev->dev, "no irq provided"); @@ -139,6 +151,9 @@ static int ehci_platform_remove(struct platform_device *dev) if (pdata->power_off) pdata->power_off(dev); + if (pdata == &ehci_platform_defaults) + dev->dev.platform_data = NULL; + return 0; } @@ -183,6 +198,12 @@ static int ehci_platform_resume(struct device *dev) #define ehci_platform_resume NULL #endif /* CONFIG_PM */ +static const struct of_device_id vt8500_ehci_ids[] = { + { .compatible = "via,vt8500-ehci", }, + { .compatible = "wm,prizm-ehci", }, + {} +}; + static const struct platform_device_id ehci_platform_table[] = { { "ehci-platform", 0 }, { } @@ -203,6 +224,7 @@ static struct platform_driver ehci_platform_driver = { .owner = THIS_MODULE, .name = "ehci-platform", .pm = &ehci_platform_pm_ops, + .of_match_table = of_match_ptr(vt8500_ehci_ids), } }; diff --git a/drivers/usb/host/ehci-vt8500.c b/drivers/usb/host/ehci-vt8500.c deleted file mode 100644 index 7ecf709610ba..000000000000 --- a/drivers/usb/host/ehci-vt8500.c +++ /dev/null @@ -1,150 +0,0 @@ -/* - * drivers/usb/host/ehci-vt8500.c - * - * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com> - * - * Based on ehci-au1xxx.c - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - */ - -#include <linux/err.h> -#include <linux/of.h> -#include <linux/platform_device.h> - -static const struct hc_driver vt8500_ehci_hc_driver = { - .description = hcd_name, - .product_desc = "VT8500 EHCI", - .hcd_priv_size = sizeof(struct ehci_hcd), - - /* - * generic hardware linkage - */ - .irq = ehci_irq, - .flags = HCD_MEMORY | HCD_USB2, - - /* - * basic lifecycle operations - */ - .reset = 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 u64 vt8500_ehci_dma_mask = DMA_BIT_MASK(32); - -static int vt8500_ehci_drv_probe(struct platform_device *pdev) -{ - struct usb_hcd *hcd; - struct ehci_hcd *ehci; - struct resource *res; - int ret; - - if (usb_disabled()) - return -ENODEV; - - /* - * Right now device-tree probed devices don't get dma_mask set. - * Since shared usb code relies on it, set it here for now. - * Once we have dma capability bindings this can go away. - */ - if (!pdev->dev.dma_mask) - pdev->dev.dma_mask = &vt8500_ehci_dma_mask; - - if (pdev->resource[1].flags != IORESOURCE_IRQ) { - pr_debug("resource[1] is not IORESOURCE_IRQ"); - return -ENOMEM; - } - hcd = usb_create_hcd(&vt8500_ehci_hc_driver, &pdev->dev, "VT8500"); - if (!hcd) - return -ENOMEM; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - hcd->rsrc_start = res->start; - hcd->rsrc_len = resource_size(res); - - hcd->regs = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(hcd->regs)) { - ret = PTR_ERR(hcd->regs); - goto err1; - } - - ehci = hcd_to_ehci(hcd); - ehci->caps = hcd->regs; - - ret = usb_add_hcd(hcd, pdev->resource[1].start, - IRQF_SHARED); - if (ret == 0) { - platform_set_drvdata(pdev, hcd); - return ret; - } - -err1: - usb_put_hcd(hcd); - return ret; -} - -static int vt8500_ehci_drv_remove(struct platform_device *pdev) -{ - struct usb_hcd *hcd = platform_get_drvdata(pdev); - - usb_remove_hcd(hcd); - usb_put_hcd(hcd); - platform_set_drvdata(pdev, NULL); - - return 0; -} - -static const struct of_device_id vt8500_ehci_ids[] = { - { .compatible = "via,vt8500-ehci", }, - { .compatible = "wm,prizm-ehci", }, - {} -}; - -static struct platform_driver vt8500_ehci_driver = { - .probe = vt8500_ehci_drv_probe, - .remove = vt8500_ehci_drv_remove, - .shutdown = usb_hcd_platform_shutdown, - .driver = { - .name = "vt8500-ehci", - .owner = THIS_MODULE, - .of_match_table = of_match_ptr(vt8500_ehci_ids), - } -}; - -MODULE_ALIAS("platform:vt8500-ehci"); -MODULE_DEVICE_TABLE(of, vt8500_ehci_ids); |