X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fusb%2Fhost%2Fohci-at91.c;h=6b7350b52419fc57e925081e21ea9757b6e33ef5;hb=9464c7cf61b9433057924c36e6e02f303a00e768;hp=85cc059705a645e947eae76f13be929048f8eef4;hpb=41689045f6a3cbe0550e1d34e9cc20d2e8c432ba;p=linux-2.6.git diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c index 85cc05970..6b7350b52 100644 --- a/drivers/usb/host/ohci-at91.c +++ b/drivers/usb/host/ohci-at91.c @@ -4,7 +4,7 @@ * Copyright (C) 2004 SAN People (Pty) Ltd. * Copyright (C) 2005 Thibaut VARENE * - * AT91 Bus Glue + * AT91RM9200 Bus Glue * * Based on fragments of 2.4 driver by Rick Bronson. * Based on ohci-omap.c @@ -19,13 +19,12 @@ #include #include -#ifndef CONFIG_ARCH_AT91 -#error "CONFIG_ARCH_AT91 must be defined." +#ifndef CONFIG_ARCH_AT91RM9200 +#error "CONFIG_ARCH_AT91RM9200 must be defined." #endif /* interface and function clocks */ static struct clk *iclk, *fclk; -static int clocked; extern int usb_disabled(void); @@ -36,14 +35,13 @@ static void at91_start_hc(struct platform_device *pdev) struct usb_hcd *hcd = platform_get_drvdata(pdev); struct ohci_regs __iomem *regs = hcd->regs; - dev_dbg(&pdev->dev, "start\n"); + dev_dbg(&pdev->dev, "starting AT91RM9200 OHCI USB Controller\n"); /* * Start the USB clocks. */ clk_enable(iclk); clk_enable(fclk); - clocked = 1; /* * The USB host controller must remain in reset. @@ -56,7 +54,7 @@ static void at91_stop_hc(struct platform_device *pdev) struct usb_hcd *hcd = platform_get_drvdata(pdev); struct ohci_regs __iomem *regs = hcd->regs; - dev_dbg(&pdev->dev, "stop\n"); + dev_dbg(&pdev->dev, "stopping AT91RM9200 OHCI USB Controller\n"); /* * Put the USB host controller into reset. @@ -68,7 +66,6 @@ static void at91_stop_hc(struct platform_device *pdev) */ clk_disable(fclk); clk_disable(iclk); - clocked = 0; } @@ -81,15 +78,14 @@ static int usb_hcd_at91_remove (struct usb_hcd *, struct platform_device *); /** - * usb_hcd_at91_probe - initialize AT91-based HCDs + * usb_hcd_at91_probe - initialize AT91RM9200-based HCDs * Context: !in_interrupt() * * Allocates basic resources for this USB host controller, and * then invokes the start() method for the HCD associated with it * through the hotplug entry's driver_data. */ -static int usb_hcd_at91_probe(const struct hc_driver *driver, - struct platform_device *pdev) +int usb_hcd_at91_probe (const struct hc_driver *driver, struct platform_device *pdev) { int retval; struct usb_hcd *hcd = NULL; @@ -99,13 +95,12 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver, return -ENODEV; } - if ((pdev->resource[0].flags != IORESOURCE_MEM) - || (pdev->resource[1].flags != IORESOURCE_IRQ)) { + if ((pdev->resource[0].flags != IORESOURCE_MEM) || (pdev->resource[1].flags != IORESOURCE_IRQ)) { pr_debug("hcd probe: invalid resource type\n"); return -ENODEV; } - hcd = usb_create_hcd(driver, &pdev->dev, "at91"); + hcd = usb_create_hcd(driver, &pdev->dev, "at91rm9200"); if (!hcd) return -ENOMEM; hcd->rsrc_start = pdev->resource[0].start; @@ -130,7 +125,7 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver, at91_start_hc(pdev); ohci_hcd_init(hcd_to_ohci(hcd)); - retval = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_DISABLED); + retval = usb_add_hcd(hcd, pdev->resource[1].start, SA_INTERRUPT); if (retval == 0) return retval; @@ -154,23 +149,21 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver, /* may be called with controller, bus, and devices active */ /** - * usb_hcd_at91_remove - shutdown processing for AT91-based HCDs + * usb_hcd_at91_remove - shutdown processing for AT91RM9200-based HCDs * @dev: USB Host Controller being removed * Context: !in_interrupt() * * Reverses the effect of usb_hcd_at91_probe(), first invoking * the HCD's stop() method. It is always called from a thread - * context, "rmmod" or something similar. + * context, normally "rmmod", "apmd", or something similar. * */ -static int usb_hcd_at91_remove(struct usb_hcd *hcd, - struct platform_device *pdev) +static int usb_hcd_at91_remove (struct usb_hcd *hcd, struct platform_device *pdev) { usb_remove_hcd(hcd); at91_stop_hc(pdev); iounmap(hcd->regs); release_mem_region(hcd->rsrc_start, hcd->rsrc_len); - disable_irq_wake(hcd->irq); clk_put(fclk); clk_put(iclk); @@ -185,21 +178,19 @@ static int usb_hcd_at91_remove(struct usb_hcd *hcd, static int __devinit ohci_at91_start (struct usb_hcd *hcd) { - struct at91_usbh_data *board = hcd->self.controller->platform_data; +// struct at91_ohci_data *board = hcd->self.controller->platform_data; struct ohci_hcd *ohci = hcd_to_ohci (hcd); - struct usb_device *root = hcd->self.root_hub; int ret; if ((ret = ohci_init(ohci)) < 0) return ret; - root->maxchild = board->ports; - if ((ret = ohci_run(ohci)) < 0) { err("can't start %s", hcd->self.bus_name); ohci_stop(hcd); return ret; } +// hcd->self.root_hub->maxchild = board->ports; return 0; } @@ -207,7 +198,7 @@ ohci_at91_start (struct usb_hcd *hcd) static const struct hc_driver ohci_at91_hc_driver = { .description = hcd_name, - .product_desc = "AT91 OHCI", + .product_desc = "AT91RM9200 OHCI", .hcd_priv_size = sizeof(struct ohci_hcd), /* @@ -249,54 +240,33 @@ static const struct hc_driver ohci_at91_hc_driver = { /*-------------------------------------------------------------------------*/ -static int ohci_hcd_at91_drv_probe(struct platform_device *pdev) +static int ohci_hcd_at91_drv_probe(struct platform_device *dev) { - device_init_wakeup(&pdev->dev, 1); - return usb_hcd_at91_probe(&ohci_at91_hc_driver, pdev); + return usb_hcd_at91_probe(&ohci_at91_hc_driver, dev); } -static int ohci_hcd_at91_drv_remove(struct platform_device *pdev) +static int ohci_hcd_at91_drv_remove(struct platform_device *dev) { - device_init_wakeup(&pdev->dev, 0); - return usb_hcd_at91_remove(platform_get_drvdata(pdev), pdev); + return usb_hcd_at91_remove(platform_get_drvdata(dev), dev); } #ifdef CONFIG_PM +/* REVISIT suspend/resume look "too" simple here */ + static int -ohci_hcd_at91_drv_suspend(struct platform_device *pdev, pm_message_t mesg) +ohci_hcd_at91_drv_suspend(struct platform_device *dev, pm_message_t mesg) { - struct usb_hcd *hcd = platform_get_drvdata(pdev); - struct ohci_hcd *ohci = hcd_to_ohci(hcd); - - if (device_may_wakeup(&pdev->dev)) - enable_irq_wake(hcd->irq); - else - disable_irq_wake(hcd->irq); - - /* - * The integrated transceivers seem unable to notice disconnect, - * reconnect, or wakeup without the 48 MHz clock active. so for - * correctness, always discard connection state (using reset). - * - * REVISIT: some boards will be able to turn VBUS off... - */ - if (at91_suspend_entering_slow_clock()) { - ohci_usb_reset (ohci); - clk_disable(fclk); - clk_disable(iclk); - clocked = 0; - } + clk_disable(fclk); + clk_disable(iclk); return 0; } -static int ohci_hcd_at91_drv_resume(struct platform_device *pdev) +static int ohci_hcd_at91_drv_resume(struct platform_device *dev) { - if (!clocked) { - clk_enable(iclk); - clk_enable(fclk); - } + clk_enable(iclk); + clk_enable(fclk); return 0; } @@ -305,7 +275,7 @@ static int ohci_hcd_at91_drv_resume(struct platform_device *pdev) #define ohci_hcd_at91_drv_resume NULL #endif -MODULE_ALIAS("at91_ohci"); +MODULE_ALIAS("at91rm9200-ohci"); static struct platform_driver ohci_hcd_at91_driver = { .probe = ohci_hcd_at91_drv_probe, @@ -313,7 +283,7 @@ static struct platform_driver ohci_hcd_at91_driver = { .suspend = ohci_hcd_at91_drv_suspend, .resume = ohci_hcd_at91_drv_resume, .driver = { - .name = "at91_ohci", + .name = "at91rm9200-ohci", .owner = THIS_MODULE, }, };