diff options
author | Greg Kroah-Hartman <gregkh@suse.de> | 2010-12-16 10:05:06 -0800 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-12-16 10:05:06 -0800 |
commit | 36facadd9ea98f8415d0dbb63e0763b7ee9d3911 (patch) | |
tree | 99dea00b332ed852f2b0a4923b581dd723f03634 /drivers/usb/host/ehci-vt8500.c | |
parent | 2faa83e2a519abea1055d156ce1b42b8fa57e87b (diff) | |
parent | 0b83ae960cd7d4a5ee02786ecf41ab45688999bf (diff) | |
download | kernel_samsung_smdk4412-36facadd9ea98f8415d0dbb63e0763b7ee9d3911.zip kernel_samsung_smdk4412-36facadd9ea98f8415d0dbb63e0763b7ee9d3911.tar.gz kernel_samsung_smdk4412-36facadd9ea98f8415d0dbb63e0763b7ee9d3911.tar.bz2 |
Merge branch 'usb-next' into musb-merge
* usb-next: (132 commits)
USB: uas: Use GFP_NOIO instead of GFP_KERNEL in I/O submission path
USB: uas: Ensure we only bind to a UAS interface
USB: uas: Rename sense pipe and sense urb to status pipe and status urb
USB: uas: Use kzalloc instead of kmalloc
USB: uas: Fix up the Sense IU
usb: musb: core: kill unneeded #include's
DA8xx: assign name to MUSB IRQ resource
usb: gadget: g_ncm added
usb: gadget: f_ncm.c added
usb: gadget: u_ether: prepare for NCM
usb: pch_udc: Fix setup transfers with data out
usb: pch_udc: Fix compile error, warnings and checkpatch warnings
usb: add ab8500 usb transceiver driver
USB: gadget: Implement runtime PM for MSM bus glue driver
USB: gadget: Implement runtime PM for ci13xxx gadget
USB: gadget: Add USB controller driver for MSM SoC
USB: gadget: Introduce ci13xxx_udc_driver struct
USB: gadget: Initialize ci13xxx gadget device's coherent DMA mask
USB: gadget: Fix "scheduling while atomic" bugs in ci13xxx_udc
USB: gadget: Separate out PCI bus code from ci13xxx_udc
...
Diffstat (limited to 'drivers/usb/host/ehci-vt8500.c')
-rw-r--r-- | drivers/usb/host/ehci-vt8500.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-vt8500.c b/drivers/usb/host/ehci-vt8500.c new file mode 100644 index 0000000..2016806 --- /dev/null +++ b/drivers/usb/host/ehci-vt8500.c @@ -0,0 +1,172 @@ +/* + * 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/platform_device.h> + +static int ehci_update_device(struct usb_hcd *hcd, struct usb_device *udev) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + int rc = 0; + + if (!udev->parent) /* udev is root hub itself, impossible */ + rc = -1; + /* we only support lpm device connected to root hub yet */ + if (ehci->has_lpm && !udev->parent->parent) { + rc = ehci_lpm_set_da(ehci, udev->devnum, udev->portnum); + if (!rc) + rc = ehci_lpm_check(ehci, udev->portnum); + } + return rc; +} + +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_init, + .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, + + /* + * call back when device connected and addressed + */ + .update_device = ehci_update_device, + + .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, +}; + +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; + + 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); + + if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { + pr_debug("request_mem_region failed"); + ret = -EBUSY; + goto err1; + } + + hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); + if (!hcd->regs) { + pr_debug("ioremap failed"); + ret = -ENOMEM; + goto err2; + } + + ehci = hcd_to_ehci(hcd); + ehci->caps = hcd->regs; + ehci->regs = hcd->regs + HC_LENGTH(readl(&ehci->caps->hc_capbase)); + + dbg_hcs_params(ehci, "reset"); + dbg_hcc_params(ehci, "reset"); + + /* cache this readonly data; minimize chip reads */ + ehci->hcs_params = readl(&ehci->caps->hcs_params); + + ehci_port_power(ehci, 1); + + ret = usb_add_hcd(hcd, pdev->resource[1].start, + IRQF_DISABLED | IRQF_SHARED); + if (ret == 0) { + platform_set_drvdata(pdev, hcd); + return ret; + } + + iounmap(hcd->regs); +err2: + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); +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); + iounmap(hcd->regs); + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); + usb_put_hcd(hcd); + platform_set_drvdata(pdev, NULL); + + return 0; +} + +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, + } +}; + +MODULE_ALIAS("platform:vt8500-ehci"); |