diff options
Diffstat (limited to 'target/linux/mcs814x/files-3.3/drivers/usb/host/ohci-mcs814x.c')
| -rw-r--r-- | target/linux/mcs814x/files-3.3/drivers/usb/host/ohci-mcs814x.c | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/target/linux/mcs814x/files-3.3/drivers/usb/host/ohci-mcs814x.c b/target/linux/mcs814x/files-3.3/drivers/usb/host/ohci-mcs814x.c new file mode 100644 index 000000000..ef4cb5143 --- /dev/null +++ b/target/linux/mcs814x/files-3.3/drivers/usb/host/ohci-mcs814x.c @@ -0,0 +1,202 @@ +/* + * OHCI HCD (Host Controller Driver) for USB. + * + * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> + * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net> + * (C) Copyright 2002 Hewlett-Packard Company + * + * Bus Glue for Moschip MCS814x. + * + * Written by Christopher Hoover <ch@hpl.hp.com> + * Based on fragments of previous driver by Russell King et al. + * + * Modified for LH7A404 from ohci-sa1111.c + * by Durgesh Pattamatta <pattamattad@sharpsec.com> + * + * Modified for pxa27x from ohci-lh7a404.c + * by Nick Bane <nick@cecomputing.co.uk> 26-8-2004 + * + * Modified for mcs814x from ohci-mcs814x.c + * by Lennert Buytenhek <buytenh@wantstofly.org> 28-2-2006 + * Based on an earlier driver by Ray Lehtiniemi + * + * This file is licenced under the GPL. + */ + +#include <linux/device.h> +#include <linux/signal.h> +#include <linux/platform_device.h> +#include <linux/of.h> + +static int usb_hcd_mcs814x_probe(const struct hc_driver *driver, + struct platform_device *pdev) +{ + int retval; + struct usb_hcd *hcd; + + if (pdev->resource[1].flags != IORESOURCE_IRQ) { + pr_debug("resource[1] is not IORESOURCE_IRQ"); + return -ENOMEM; + } + + pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask; + + hcd = usb_create_hcd(driver, &pdev->dev, "mcs814x"); + if (hcd == NULL) + return -ENOMEM; + + hcd->rsrc_start = pdev->resource[0].start; + hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1; + if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { + usb_put_hcd(hcd); + retval = -EBUSY; + goto err1; + } + + hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); + if (hcd->regs == NULL) { + pr_debug("ioremap failed"); + retval = -ENOMEM; + goto err2; + } + + ohci_hcd_init(hcd_to_ohci(hcd)); + + retval = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_DISABLED); + if (retval == 0) + return retval; + + iounmap(hcd->regs); +err2: + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); +err1: + usb_put_hcd(hcd); + + return retval; +} + +static void usb_hcd_mcs814x_remove(struct usb_hcd *hcd, + struct platform_device *pdev) +{ + usb_remove_hcd(hcd); + iounmap(hcd->regs); + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); + usb_put_hcd(hcd); +} + +static int __devinit ohci_mcs814x_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) { + ohci_err(ohci, "can't start %s", hcd->self.bus_name); + ohci_stop(hcd); + return ret; + } + + return 0; +} + +static struct hc_driver ohci_mcs814x_hc_driver = { + .description = hcd_name, + .product_desc = "MCS814X OHCI", + .hcd_priv_size = sizeof(struct ohci_hcd), + .irq = ohci_irq, + .flags = HCD_USB11 | HCD_MEMORY, + .start = ohci_mcs814x_start, + .stop = ohci_stop, + .shutdown = ohci_shutdown, + .urb_enqueue = ohci_urb_enqueue, + .urb_dequeue = ohci_urb_dequeue, + .endpoint_disable = ohci_endpoint_disable, + .get_frame_number = ohci_get_frame, + .hub_status_data = ohci_hub_status_data, + .hub_control = ohci_hub_control, +#ifdef CONFIG_PM + .bus_suspend = ohci_bus_suspend, + .bus_resume = ohci_bus_resume, +#endif + .start_port_reset = ohci_start_port_reset, +}; + +extern int usb_disabled(void); + +static int ohci_hcd_mcs814x_drv_probe(struct platform_device *pdev) +{ + int ret; + + ret = -ENODEV; + if (!usb_disabled()) + ret = usb_hcd_mcs814x_probe(&ohci_mcs814x_hc_driver, pdev); + + return ret; +} + +static int ohci_hcd_mcs814x_drv_remove(struct platform_device *pdev) +{ + struct usb_hcd *hcd = platform_get_drvdata(pdev); + + usb_hcd_mcs814x_remove(hcd, pdev); + + return 0; +} + +#ifdef CONFIG_PM +static int ohci_hcd_mcs814x_drv_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct usb_hcd *hcd = platform_get_drvdata(pdev); + struct ohci_hcd *ohci = hcd_to_ohci(hcd); + + if (time_before(jiffies, ohci->next_statechange)) + msleep(5); + ohci->next_statechange = jiffies; + + hcd->state = HC_STATE_SUSPENDED; + + return 0; +} + +static int ohci_hcd_mcs814x_drv_resume(struct platform_device *pdev) +{ + struct usb_hcd *hcd = platform_get_drvdata(pdev); + struct ohci_hcd *ohci = hcd_to_ohci(hcd); + int status; + + if (time_before(jiffies, ohci->next_statechange)) + msleep(5); + ohci->next_statechange = jiffies; + + ohci_finish_controller_resume(hcd); + return 0; +} +#endif + +static const struct of_device_id mcs814x_ohci_id[] = { + { .compatible = "moschip,mcs814x-ohci" }, + { .compatible = "ohci-le" }, + { /* sentinel */ }, +}; + +static struct platform_driver ohci_hcd_mcs814x_driver = { + .probe = ohci_hcd_mcs814x_drv_probe, + .remove = ohci_hcd_mcs814x_drv_remove, + .shutdown = usb_hcd_platform_shutdown, +#ifdef CONFIG_PM + .suspend = ohci_hcd_mcs814x_drv_suspend, + .resume = ohci_hcd_mcs814x_drv_resume, +#endif + .driver = { + .name = "mcs814x-ohci", + .owner = THIS_MODULE, + .of_match_table = mcs814x_ohci_id, + }, +}; + +MODULE_ALIAS("platform:mcs814x-ohci"); |