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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /drivers/usb/host/ohci-ppc-soc.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'drivers/usb/host/ohci-ppc-soc.c')
-rw-r--r-- | drivers/usb/host/ohci-ppc-soc.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/drivers/usb/host/ohci-ppc-soc.c b/drivers/usb/host/ohci-ppc-soc.c new file mode 100644 index 00000000..1514b706 --- /dev/null +++ b/drivers/usb/host/ohci-ppc-soc.c @@ -0,0 +1,215 @@ +/* + * 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 + * (C) Copyright 2003-2005 MontaVista Software Inc. + * + * Bus Glue for PPC On-Chip OHCI driver + * Tested on Freescale MPC5200 and IBM STB04xxx + * + * Modified by Dale Farnsworth <dale@farnsworth.org> from ohci-sa1111.c + * + * This file is licenced under the GPL. + */ + +#include <linux/platform_device.h> +#include <linux/signal.h> + +/* configure so an HC device and id are always provided */ +/* always called with process context; sleeping is OK */ + +/** + * usb_hcd_ppc_soc_probe - initialize On-Chip HCDs + * Context: !in_interrupt() + * + * Allocates basic resources for this USB host controller. + * + * Store this function in the HCD's struct pci_driver as probe(). + */ +static int usb_hcd_ppc_soc_probe(const struct hc_driver *driver, + struct platform_device *pdev) +{ + int retval; + struct usb_hcd *hcd; + struct ohci_hcd *ohci; + struct resource *res; + int irq; + + pr_debug("initializing PPC-SOC USB Controller\n"); + + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!res) { + pr_debug("%s: no irq\n", __FILE__); + return -ENODEV; + } + irq = res->start; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + pr_debug("%s: no reg addr\n", __FILE__); + return -ENODEV; + } + + hcd = usb_create_hcd(driver, &pdev->dev, "PPC-SOC USB"); + if (!hcd) + return -ENOMEM; + hcd->rsrc_start = res->start; + hcd->rsrc_len = resource_size(res); + + if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { + pr_debug("%s: request_mem_region failed\n", __FILE__); + retval = -EBUSY; + goto err1; + } + + hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); + if (!hcd->regs) { + pr_debug("%s: ioremap failed\n", __FILE__); + retval = -ENOMEM; + goto err2; + } + + ohci = hcd_to_ohci(hcd); + ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC; + +#ifdef CONFIG_PPC_MPC52xx + /* MPC52xx doesn't need frame_no shift */ + ohci->flags |= OHCI_QUIRK_FRAME_NO; +#endif + ohci_hcd_init(ohci); + + retval = usb_add_hcd(hcd, irq, 0); + if (retval == 0) + return retval; + + pr_debug("Removing PPC-SOC USB Controller\n"); + + iounmap(hcd->regs); + err2: + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); + err1: + usb_put_hcd(hcd); + return retval; +} + + +/* may be called without controller electrically present */ +/* may be called with controller, bus, and devices active */ + +/** + * usb_hcd_ppc_soc_remove - shutdown processing for On-Chip HCDs + * @pdev: USB Host Controller being removed + * Context: !in_interrupt() + * + * Reverses the effect of usb_hcd_ppc_soc_probe(). + * It is always called from a thread + * context, normally "rmmod", "apmd", or something similar. + * + */ +static void usb_hcd_ppc_soc_remove(struct usb_hcd *hcd, + struct platform_device *pdev) +{ + usb_remove_hcd(hcd); + + pr_debug("stopping PPC-SOC USB Controller\n"); + + iounmap(hcd->regs); + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); + usb_put_hcd(hcd); +} + +static int __devinit +ohci_ppc_soc_start(struct usb_hcd *hcd) +{ + struct ohci_hcd *ohci = hcd_to_ohci(hcd); + int ret; + + if ((ret = ohci_init(ohci)) < 0) + return ret; + + if ((ret = ohci_run(ohci)) < 0) { + err("can't start %s", ohci_to_hcd(ohci)->self.bus_name); + ohci_stop(hcd); + return ret; + } + + return 0; +} + +static const struct hc_driver ohci_ppc_soc_hc_driver = { + .description = hcd_name, + .hcd_priv_size = sizeof(struct ohci_hcd), + + /* + * generic hardware linkage + */ + .irq = ohci_irq, + .flags = HCD_USB11 | HCD_MEMORY, + + /* + * basic lifecycle operations + */ + .start = ohci_ppc_soc_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, +#ifdef CONFIG_PM + .bus_suspend = ohci_bus_suspend, + .bus_resume = ohci_bus_resume, +#endif + .start_port_reset = ohci_start_port_reset, +}; + +static int ohci_hcd_ppc_soc_drv_probe(struct platform_device *pdev) +{ + int ret; + + if (usb_disabled()) + return -ENODEV; + + ret = usb_hcd_ppc_soc_probe(&ohci_ppc_soc_hc_driver, pdev); + return ret; +} + +static int ohci_hcd_ppc_soc_drv_remove(struct platform_device *pdev) +{ + struct usb_hcd *hcd = platform_get_drvdata(pdev); + + usb_hcd_ppc_soc_remove(hcd, pdev); + return 0; +} + +static struct platform_driver ohci_hcd_ppc_soc_driver = { + .probe = ohci_hcd_ppc_soc_drv_probe, + .remove = ohci_hcd_ppc_soc_drv_remove, + .shutdown = usb_hcd_platform_shutdown, +#ifdef CONFIG_PM + /*.suspend = ohci_hcd_ppc_soc_drv_suspend,*/ + /*.resume = ohci_hcd_ppc_soc_drv_resume,*/ +#endif + .driver = { + .name = "ppc-soc-ohci", + .owner = THIS_MODULE, + }, +}; + +MODULE_ALIAS("platform:ppc-soc-ohci"); |